Rich Gundersen and his wife, Colleen, are raising their son near Damnation Grove, a swath of redwoods on which Rich's employer, Sanderson Timber Co., plans to make a killing. When the opportunity arises to buy 24-7 Ridge - costing them all the savings they've squirreled away for their growing family - Rich grabs it. Because their family isn't growing; Colleen has lost several pregnancies. For decades, the herbicides the logging company uses were considered harmless. But Colleen is no longer sure. As mudslides take out hillsides and salmon vanish from creeks, her search for answers threatens to unravel not just Rich's plans for the 24-7, but their marriage too.